Every wiki develops a set of norms. Every member of the community sets themselves against those norms. If you have people who post stuff that is waaaay beyond those norms, such as posting pornographic images in pages, then you find that kind of thing gets dealt with very quickly. It just gets removed. But since last Fall we have had an individual who has been posted only *slightly* outside those norms, so close to what's acceptable that others have been unable to agree on whether or not his contributions should remain. [...] People said "ban him" but I'm not really sure I'd be able to effectively do that even if I wanted to. I'd be getting into an arms race that I could never win. Sunir understands what he calls "soft security". I was using code against behaviour but I didn't feel that I was in a very strong position. The problem was that the abuser had too much time. He was too active and could get too worked up about things, so much that he had to fight. So I put a post-limiter in place. People can only post so many times during a set time period. And it worked, almost straight away. We haven't banned the abuser, merely limited his ability to post so that what he does post is more within the norms we can expect and deal with.